Chimney construction project construction matters - Huaqiang Electronic Network

Probe domestic switch needle KG-300K needle head diameter is 3.0mm normally open switch needle

Factory direct sales - solid capacitor - patch aluminum electrolysis, to ensure that the factory first-class goods!

1. The engineering requirements for brick chimney removal and chimney construction are as follows:

1) The material of the chimney must be qualified, the material must have a product certificate before it can be used, and the design requirements must be consistent with the contract requirements;

2) The inner and outer diameters of the pipe must conform to the national standards, the inner and outer walls are smooth and defect-free, and the thickness is uniform; the new chimney surface has no rust, uniform welds, no cracks and flat defects;

3) The shape of the lock nut is intact, there is no warping deformation, etc. The thickness of the metal plate of the iron switch box must conform to the national standard.

Second, the operation process

New process of chimney: reserve box position - laying pipeline - pipeline connection - cut - bend.

New welding process of chimney: reserved box position - laying pipeline - pipeline connection - cutting - Threading - bending - crossing grounding line - handling deformation joint - pipeline anti-corrosion.

Third, the operation process

1) Reserve box position: In order to ensure the position of the box is accurate, according to the requirements of the design drawings, a hole larger than the size of the box can be reserved at the position of the distribution box. Generally, the left and right sides can be reserved. -100mm, 150-200mm on the top and bottom. The reserved size of the junction box and switch box is 150mm*250mm, and the hole size of the pipe is kept at 1/2 of the hole to facilitate the installation of the box.

2) The laying pipeline can adopt a method of taking out the pipeline from the chimney surface or guiding the pipeline from the wall box. If the pipeline is introduced from the chimney surface, an electrician should be assigned to the concrete when pouring concrete to ensure the position of the pipeline, and the pipeline beyond the wall line should be treated in time. Care should be taken to avoid deformation or breakage of the pipeline; When the pipeline is led out from the box, the bricklayer should be allowed to reserve the hole in time, and the bridge should be fixed with the pre-embedded steel when laying on the hole to ensure that the pipeline is laid in the middle of the wall.

Fourth, matters needing attention

1. When constructing a chimney location, it is necessary to carefully review the drawings and consult with the civil engineering professionals in time to avoid the gaps in the size and height of the caves and reduce the waste of manpower and material resources.

2. Do a good job of heightening the chimney and anti-corrosion work on the outer wall of the chimney. The technique of inserting the chimney in the street is not solved, and the pipe joint is loosened.

3. Strengthen the inspection of various operators and timely carry out technical training, especially in welding, to reduce the quality problems such as cracks in the central slag.